FISH mapping of the IGF2 gene in horse and donkey—detection of homoeology with HSA11

FISH mapping of the IGF2 gene in horse and donkey—detection of homoeology with HSA11 Three genomic subclones derived from a phage clone containing the equine IGF2 gene were used to FISH map the gene on horse (ECA) and donkey (EAS) metaphase chromosomes. The gene mapped on ECA 12q13 band and is the first locus mapped to this horse chromosome. In donkey the gene mapped very terminal on the long arm of one small submetacentric chromosome that shows almost identical DAPI-banding pattern with ECA12. This is the first locus mapped in donkey genome. Cross species chromosome painting of equine metaphase chromosomes with human Chromosome (Chr) 11-specific probe showed homoeology of this human chromosome with ECA12 and ECA7. The novel ECA12 comparative painting results are thus in accordance with the localization of the equine IGF2 gene. Comparison of the hitherto known physical locations of IGF2 in different species, viz. human, cattle, sheep, horse, and donkey, shows that this gene tends to maintain a terminal location on the chromosome arm. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Mammalian Genome Springer Journals

FISH mapping of the IGF2 gene in horse and donkey—detection of homoeology with HSA11

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Publisher
Springer-Verlag
Copyright
Copyright © 1997 by Springer-Verlag
Subject
Life Sciences; Cell Biology; Anatomy; Zoology
ISSN
0938-8990
eISSN
1432-1777
D.O.I.
10.1007/s003359900505
Publisher site
See Article on Publisher Site

Abstract

Three genomic subclones derived from a phage clone containing the equine IGF2 gene were used to FISH map the gene on horse (ECA) and donkey (EAS) metaphase chromosomes. The gene mapped on ECA 12q13 band and is the first locus mapped to this horse chromosome. In donkey the gene mapped very terminal on the long arm of one small submetacentric chromosome that shows almost identical DAPI-banding pattern with ECA12. This is the first locus mapped in donkey genome. Cross species chromosome painting of equine metaphase chromosomes with human Chromosome (Chr) 11-specific probe showed homoeology of this human chromosome with ECA12 and ECA7. The novel ECA12 comparative painting results are thus in accordance with the localization of the equine IGF2 gene. Comparison of the hitherto known physical locations of IGF2 in different species, viz. human, cattle, sheep, horse, and donkey, shows that this gene tends to maintain a terminal location on the chromosome arm.

Journal

Mammalian GenomeSpringer Journals

Published: Apr 1, 2009

References

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